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All Journal SMARTek MEKTEK Jurnal MEKANIKAL Rekayasa Mesin EPI International Journal of Engineering
Daud Patabang
Department Of Mechanical Engineering, Engineering Faculty, Tadulako University, Palu
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Mechanical Engineering

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Journal : MEKTEK

 1 
EFEK UDARA DI DALAM SISTEM REFRIGERASI Patabang, Daud
MEKTEK Vol 7, No 2 (2005)
Publisher : MEKTEK

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Abstract

The performance of refrigeration system are affected by  condenser, evaporator ,compressor and regulating  valve. Besides   cooling system itself   air in the system are also considered to the performance. The aim of this research to investigate the effect of air in the refrigeration system that  cause the performance of system. The result of this research indicates that coefficient of performance (COP)decrease falls to 37 % (from 8.4 to 5.28) due to the air in refrigerations system, on the contrary  there  is increasing about 40 % (from 25 kJ/kg to 35 kJ/kg)of energy in gernerating compressor
ANALISIS NILAI KALOR SECARA EKSPERIMENTAL DAN TEORITIK DARI BRIKET ARANG KULIT KEMIRI Patabang, Daud
MEKTEK Vol 11, No 3 (2009)
Publisher : MEKTEK

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Abstract

The aim of this article is to investigate heating value of candlenut shell Char briquette by experimental andtheoretical means. The experimental performs the High Heating Value HHV by Bomb Calorimeter PARR12611, and investigation in the theoretical ones by using Dulong’s formula.The result shows that the heating value of HHV is 10697,4 Btu/lbm, and by Dulong’s formula is10549,Btu/lb. There is 1,16% deviation of the two means because in the Dulong’s does not includedissociation effect
Co-Authors Alimuddin Sam Basri Basri Jeri Tangalayuk Siang Kristian Seleng Mustofa Mustofa Wahyu H. Piarah Yuli Asmi Rahman